When I program my Phonak aids, the software runs a feedback test, and a line showing the limit for each ear at all frequencies is shown on the screen.
I make all my settings so as to not exceed this line. No feedback problems here.
That’s the advantage of DIY programming. I eliminated all compression, and adjusted the aids to mostly hear what’s in front of me, nulling sounds to the rear. All these minor tweaks to a music program can be very beneficial. It’s almost like going analog, which reduces distortion.
The advanced digital technology that helps you to understand voices in difficult situations, can be very detrimental when listening to music.